in the diagram above we can see the workflow of creating a resource(vm), the user selects the requirements of the vm, sends it to the resource manager then the resource manger creates the resource(vm) and return it to the user.

The user can make these requests to the resource manager using various ways such as api , cli, user interface ,and more.

Resource group

grouping of resources
A resource group is a collection of resources that share the same lifecycle, permissions, and policies.

why? - it is mandatory to create a group before creating resources. Moreover, it is easier to track resources as they become segregated. Managing access ,permissions, security standards becomes easier. And other things like cost monitoring, auditing, etc.

how? - it depends on the practices and requirements of the organization. Example- 3 groups named, qa, development and production.

NOTE: resource group and resource are 1:1 , one resource can only be connected to one resource group and vice versa.

Resource manager

It takes user requirements and creates resource . It acts as an interface between user and azure resources.

Apart from this, i have created a resource group and a virtual machine(resource) to for testing it out.

The contents of this blog are notes for the video linked below:

https://youtu.be/0lZAtlwjp_A?si=ajLRiiF_PDyx_BDc

Creating an account

We can go this link https://azure.microsoft.com/en-in/pricing/purchase-options/azure-account and click on try for free if you just want to try and learn azure, the other option is pay as you go but i don't recommend that for someone who is just starting to learn azure.

After clicking on try for free, we have to fill up our personal details

After logging in, we get to the homepage

Now that we have created the account lets move on to the next topic regions.

Why are the data centers(availability zones) spread across different regions?

latency and downtime. We want minimum latency and downtime.

IaaS,PaaS,SaaS

Azure provides many different services , it is upto the user how they want to use it, as a Infrastructure as a Service model**(Example- vm, networking , stoarage and thden use third party apps inside them.)** or Product as a Service model**(Example- mysql database , configure it yourself)** or Software as a service model**(Example- outlook email service, just use a software)**

The content of this blog are notes of the video linked below

https://youtu.be/e99QsTsJPJs?si=n2-e2Zxu4vlS3NbT

Virtualization is the process of creating a virtual version of something, such as an operating system, server, storage, or network resources.

Virtual Machine

A Virtual Machine (VM) is a software-based emulation of a physical computer. It allows running multiple operating systems on a single physical machine.
This is done by making logical partitions of a server/system into smaller parts.

API (Application Programming Interface)

API is a set of rules and protocols that allows different software applications to communicate with each other. It defines how software components should interact.

Availability Zones

Availability Zones are isolated locations within a region that have their own power, cooling, and networking. They are designed to provide high availability and fault tolerance.

Scalability

Scalability is the ability of a system to handle an increasing amount of work or its potential to be enlarged to accommodate that growth.

Elasticity

Elasticity in cloud computing refers to the ability to dynamically scale resources up or down based on demand.

Agility

Agility is the capability of quickly and easily adapting to changes. In the context of cloud computing, it involves the rapid deployment of resources and applications.

High Availability

High Availability (HA) ensures that a system or application is operational and accessible for a high percentage of time, typically 99.9% or higher.

Fault Tolerance

Fault Tolerance is the ability of a system to continue operating without interruption in the presence of hardware or software failures.

Disaster Recovery

Disaster Recovery involves the planning and processes for restoring and recovering data and systems after a natural or human-induced disaster.

Load BalancingLoad Balancing is the distribution of network traffic or computing workload across multiple servers to ensure no single server is overwhelmed.

It's like having a powerful computer somewhere out there on the web that you can use for tasks without needing to own or physically manage the hardware. This allows users to access data and applications from anywhere with an internet connection.

In simpler terms, using someone else's server that is maintained by them, owned by them, but you can use it on the internet by paying for it like a service.

What is cloud computing?

Cloud computing is a technology model that involves the delivery of computing services over the internet. Instead of owning and maintaining physical servers and infrastructure, users can access and use

• computing resources,

• applications,

• storage

provided by either third-party service providers (public cloud) or their own organization (private cloud) through the internet. These services are hosted in data centers located around the world.

Public cloud:

Cloud services hosted for public use i.e. publicly available cloud services which anyone can use by buying a subscription.

Who Uses It: Everyone, like individuals, businesses, and organizations.

What It's Like: Imagine a giant, shared computer space on the internet. It's like using apps, storing files, or doing tasks on the internet that anyone can access.

Example: Think of Google Drive or Amazon Web Services (AWS).

Private cloud:

Cloud services hosted for an organization's personal use i.e. no one outside the organization can access these services.

Who Uses It: One specific organization or business.

What It's Like: Picture having your own personal, private computer space. It's like a digital clubhouse where only you and your team have access. Others can't just drop in.

Example: A company using its own server for all its digital needs.

Hybrid cloud:

When a company uses both public and private cloud.

Who Uses It: A mix of everyone, depending on needs.

What It's Like: It's like having your private computer space, but sometimes you use the shared internet space too.

Example: A business storing sensitive data in its private space but using the public cloud for extra storage or specific tasks.

In a Nutshell:

Public Cloud: Shared digital space for everyone.

Private Cloud: Your own exclusive digital space.

Hybrid Cloud: Using both your private space and the shared online space when needed.